Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=true and destructiveHint=false, covering the safety profile. The description adds nothing beyond that — no pagination behavior, no result scope, no auth/team-scoping context — so it contributes no behavioral value on top of structured fields.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

A single front-loaded sentence with zero waste. It is efficient, though for a tool with 9 parameters it is arguably too thin rather than well-calibrated.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 9-parameter tool with 0% schema coverage and no output schema, the description should explain the team/project scoping and the meaning of the extra parameters. A single line leaves an agent unable to invoke this correctly beyond the required project_id.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0% across 9 parameters, so the description carries the full burden and does not compensate. Only project_id is loosely implied by the wording; team_id and the entire beon_* family (approval_id, beon_app_id, beon_context, beon_resume_id, beon_release_id, beon_environment, beon_connection_id) are left entirely unexplained.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb+resource ('List domains attached to a project'), so the operation is unambiguous. However, it offers no differentiation from adjacent Vercel siblings such as vercel_list_dns_records, vercel_list_aliases, or vercel_list_projects, leaving scope boundaries to inference.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no when-to-use guidance, no prerequisites, and no mention of alternatives. The agent must guess whether this is the right call versus vercel_get_project, vercel_list_dns_records, or vercel_list_aliases.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.